the current wording "Download Not Available" is kinda misleading since the Resource is actually available..... the "guest" just needs to register at the Forum in order to download the Resource.
So in fact the Resource is indeed "available".
change the "Post New Thread"-button towards similar position as it is already on "mobile view".
This will make the button better exposed and therefore also better visible.
this new suggested button-location also makes more logical sense, as the user is...